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Swift-XRT spectra of GRB 091024

Last updated after receiving ObsID 00373674002, version 9

Data were analysed using HEASOFT version 6.32

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The spectral fits assume a redshift: 1.092 (GCN 10065)

Jump to: Time-averaged|Late Time


Time-averaged spectrum (T0 + 3168 to 74906 s)

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WT and PC mode spectra of Time-averaged

WT mode. Mean photon arrival: T0+3177 s

NH (Galactic)6.30 × 1021 cm-2
NH (intrinsic)5 (+8, -3) × 1023 cm-2
z of absorber1.092
Photon index7 (+6, -7)
Flux (0.3-10 keV)
(Observed)
1.18 (+2.41, -0.75) × 10-10 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
2.2 (+1.00 × 107, -2.1) × 10-7 erg cm-2 s-1
Counts to flux (obs)2.96 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)5.64 × 10-8 erg cm-2 ct-1
W-stat (dof)
What's this?
4.12 (5)
Spectrum exposure18 s

PC mode. Mean photon arrival: T0+6589 s

NH (Galactic)6.30 × 1021 cm-2
NH (intrinsic)3.3 (+2.1, -1.8) × 1022 cm-2
z of absorber1.092
Photon index1.33 (+0.23, -0.22)
Flux (0.3-10 keV)
(Observed)
5.0 (+0.6, -0.5) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
6.6 (+0.6, -0.6) × 10-11 erg cm-2 s-1
Counts to flux (obs)6.81 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)8.97 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
256.00 (344)
Spectrum exposure4.9 ks

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Late Time spectrum (T0 + 4000 to 74906 s)

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PC mode spectrum of Late Time

PC mode. Mean photon arrival: T0+7970 s

NH (Galactic)6.30 × 1021 cm-2
NH (intrinsic)5.7 (+2.8, -2.4) × 1022 cm-2
z of absorber1.092
Photon index1.68 (+0.30, -0.28)
Flux (0.3-10 keV)
(Observed)
2.6 (+0.4, -0.3) × 10-11 erg cm-2 s-1
Flux (0.3-10 keV)
(Unabsorbed)
4.2 (+0.9, -0.6) × 10-11 erg cm-2 s-1
Counts to flux (obs)5.98 × 10-11 erg cm-2 ct-1
Counts to flux (unabs)9.73 × 10-11 erg cm-2 ct-1
W-stat (dof)
What's this?
207.10 (265)
Spectrum exposure4.1 ks

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